CN208399143U - A kind of modularization crossed roller bearing temperature rise and Static stiffness test device - Google Patents
A kind of modularization crossed roller bearing temperature rise and Static stiffness test device Download PDFInfo
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- CN208399143U CN208399143U CN201821008954.7U CN201821008954U CN208399143U CN 208399143 U CN208399143 U CN 208399143U CN 201821008954 U CN201821008954 U CN 201821008954U CN 208399143 U CN208399143 U CN 208399143U
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- roller bearing
- crossed roller
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- turntable
- displacement sensor
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Abstract
The utility model discloses a kind of crossed roller bearing temperature rise mechanism for testing, crossed roller bearing angular rigidity mechanism for testing, axial rigidity mechanism for testing and radial rigidity mechanism for testing.The device of the utility model, using Modular Structure Design, structure is simple, function is more, using above-mentioned each mechanism, the method for realizing crossed roller bearing temperature rise test, the test of crossed roller bearing angular rigidity, axial rigidity test and radial rigidity test can not only carry out the temperature rise test of crossed roller bearing, and three rigidity values can be obtained by load test, it is of great significance to hot, the static characteristic of studying and test crossed roller bearing.
Description
Technical field
The utility model belongs to mechanical equipment technical field, is related to a kind of modularization crossed roller bearing temperature rise and Static stiffness
Test device.
Background technique
Crossed roller bearing is a kind of precision rotating unit, and not only its structure size is small, but also can bear axial direction simultaneously
Power, radial force and disturbing moment are widely used in the numerical control rotating platform of the equipment such as numerically-controlled machine tool, in the structure of joint of robot.It hands over
The temperature rise and Static stiffness of pitching roller bearing directly influence the machine system performance of lathe, robot, therefore, using effective examination
Proved recipe method accurately tests crossed roller bearing temperature characteristic and axial direction, radial rigidity and angular rigidity under different loads and revolving speed
Characteristic is of great significance.
Hot, the static characteristic parameter of crossed roller bearing are the prediction of the overall performances such as numerically-controlled machine tool, robot, bearing conjunction
The basis of reason apolegamy etc., therefore temperature rise and Static stiffness characteristic are one critically important performance parameters of crossed roller bearing.State at present
Interior outer bearing sample only seldom partially provides these data, and parameter is not complete, in this way in lathe, robot architecture's design
It reasonably selects crossed roller bearing and causes difficulty, there is an urgent need to a set of Static stiffness that can survey crossed roller bearing and hot spies
The apparatus and method for of property.
Utility model content
The purpose of the utility model is to provide a kind of modularization crossed roller bearing temperature rise and Static stiffness test devices, solve
The equipment that the prior art does not carry out temperature rise and Static stiffness test specifically for crossed roller bearing, so that bearing sample data
The problem of shortage, accuracy is poor, influences its use.
The technical solution adopted in the utility model is,
The first, a kind of crossed roller bearing temperature rise mechanism for testing, including clump weight, clump weight are fixedly mounted on turntable axis
Heart hole upper end, turntable are supported in the annular groove of pedestal top by crossed roller bearing, and crossed roller bearing outer ring is led to by top board
It crosses a circle bolt to be fixed on the base, crossed roller bearing inner ring is fixed on turntable by lower platen by another circle bolt；Turn
Platform axle center hole lower end is threadably secured with connecting shaft to be connect, and connecting shaft passes downwardly through the output axis connection of shaft coupling and motor,
Motor is fixed in base intracavity；
Pedestal upper surface is provided with the installation of TC slot, and multiple thermocouples, Ge Gere are symmetrically installed in the installation of TC slot
Galvanic couple is contacted with crossed roller bearing outer ring.
Second, a kind of crossed roller bearing angular rigidity mechanism for testing is radially provided with a flange in pedestal lower circumference
Hole is equipped with load sleeve in the flange hole, and load sleeve outer installation side is fixed by bolt and base outer wall, load sleeve
Loading bolt is equipped with by thread bush in inner hole；Torgue measurement axis, loading bolt and torque are set in turntable axle center hole downwards
Successively apical grafting has steel ball one, sensor connecting shaft and force snesor between measurement axis；Load sleeve, loading bolt, steel ball one pass
Sensor connecting shaft, force snesor are collectively referred to as loading module, and loading module herein is radially installed；
Pedestal upper surface is also diametrically symmetrically arranged with displacement sensor bracket one and displacement sensor bracket two, position
It is provided with displacement sensor one on displacement sensor bracket one, displacement sensor two is provided on displacement sensor bracket two.
The third, a kind of crossed roller bearing axial rigidity mechanism for testing is fixedly mounted in pedestal upper surface by screw
There is bracket sleeve tube, be bolted in the axle center hole of top surface on bracket sleeve tube and load sleeve is installed, leads in load sleeve inner hole
Thread bush is crossed equipped with loading bolt；Be set with connecting platform in turntable axle center hole upper end, loading bolt downwards with connecting platform it
Between be disposed with steel ball one, sensor connecting shaft, force snesor.
4th kind, a kind of crossed roller bearing radial rigidity mechanism for testing, including bearing block and radial jackshaft, intersect rolling
Sub- bearing outer ring is supported in the stepped hole of bearing block, and the top board on crossed roller bearing outer ring is fixedly connected with the bearing seat,
Crossed roller bearing inner ring is fixed by lower platen and turntable；Radial jackshaft, radial jackshaft are set in turntable axle center hole
Upper and lower ends pass through briquetting and are mounted in radial support；
It further include radial reinforcing pedestal, radial reinforce in pedestal inner hole is provided with loading bolt, loading bolt and bearing block
Steel ball one, sensor connecting shaft, radial force sensor, radial force sensor link block, steel ball two are disposed between outer wall,
The part is collectively referred to as the loading module of radial force；
Transverse bearing seat is provided with displacement measurement plane, i.e., by the central axes of radial jackshaft and the central axes of loading bolt
Composed plane has displacement measurement unit in the displacement measurement Plane Installation.
The utility model has the beneficial effects that structure is simple using Modular Structure Design, function is more, can not only open
The temperature rise test of crossed roller bearing is opened up, and three rigidity values can be obtained by load test, research and test are intersected
Hot, the static characteristic of roller bearing are of great significance.
Detailed description of the invention
Fig. 1 is the crossed roller bearing temperature rise mechanism for testing scheme of installation of the utility model；
Fig. 2 is the crossed roller bearing angular rigidity mechanism for testing scheme of installation of the utility model；
Fig. 3 is the crossed roller bearing axial rigidity mechanism for testing scheme of installation of the utility model；
Fig. 4 is the crossed roller bearing radial rigidity mechanism for testing scheme of installation of the utility model；
Fig. 5 is the crossed roller bearing angular rigidity test schematic of the utility model.
In figure, 1. top boards, 2. crossed roller bearings, 3. lower platens, 4. turntables, 5. pedestals, 6. motors, 7. shaft couplings,
8. connecting shaft, 9. thermocouples, 10. clump weights, 11. displacement sensors one, 12. displacement sensor brackets one, 13. torgue measurements
Axis, 14. force snesors, 15. sensor connecting shafts, 16. steel balls one, 17. loading bolts, 18. load sleeves, 19. displacement sensings
Device two, 20. displacement sensor brackets two, 21. bracket sleeve tubes, 22. connecting platforms, 23. displacement sensors three, 24. displacement sensings
Device four, 25. displacement sensors five, 26. radial jackshafts, 27. bearing blocks, 28. radial force sensor link blocks, 29. radial directions add
Power pedestal, 30. radial supports, 31. briquettings, 32. steel balls two.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and detailed description.
If the structure of Fig. 1, the crossed roller bearing temperature rise mechanism for testing of the utility model are, including matching for quality is adjusted
Pouring weight 10, clump weight 10 are fixedly mounted on 4 axle center hole upper end of turntable, and turntable 4 is supported on pedestal 5 by crossed roller bearing 2
In portion's annular groove, 2 outer ring of crossed roller bearing is fixed on pedestal 5 by top board 1 by a circle bolt, in crossed roller bearing 2
Circle is fixed on turntable 4 by lower platen 3 by another circle bolt；4 axle center hole lower end of turntable and 8 company of being threadably secured of connecting shaft
It connects, connecting shaft 8 passes downwardly through the output axis connection of shaft coupling 7 Yu motor 6, and motor 6 is fixed in 5 inner cavity of pedestal；
The output shaft revolution of above-mentioned clump weight 10, turntable 4, crossed roller bearing 2, connecting shaft 8, shaft coupling 7 and motor 6
Axis is on the same straight line；5 upper surface of pedestal is provided with the installation of TC slot, and multiple heat are symmetrically installed in the installation of TC slot
Galvanic couple 9, each thermocouple 9 are contacted with 2 outer ring of crossed roller bearing, to detect the temperature parameter of crossed roller bearing 2.
Such as Fig. 2, the structure of the crossed roller bearing angular rigidity mechanism for testing of the utility model is on the basis of Fig. 1, to tear open
Except motor 6, connecting shaft 8 and shaft coupling 7, it is radially provided with a flange hole in 5 lower circumference of pedestal, is equipped with and adds in the flange hole
Sleeve 18 is carried, 18 outer of load sleeve installation side is fixed by bolt and 5 outer wall of pedestal, passes through screw thread in 18 inner hole of load sleeve
It is set with loading bolt 17；Torgue measurement axis 13, loading bolt 17 and torgue measurement axis 13 are set in 4 axle center hole of turntable downwards
Between successively apical grafting have steel ball 1, sensor connecting shaft 15 and force snesor 14；Load sleeve 18, loading bolt 17, steel ball
One 16, sensor connecting shaft 15, force snesor 14 are collectively referred to as loading module, and loading module herein is radially installed；
5 upper surface of pedestal is also diametrically symmetrically arranged with displacement sensor bracket 1 and displacement sensor bracket two
20, displacement sensor 1 is provided on displacement sensor bracket 1, and displacement is provided on displacement sensor bracket 2 20 and is passed
Sensor 2 19, displacement sensor 1 and displacement sensor 2 19 are opposite between 2 Internal and external cycle of crossed roller bearing for detecting
Displacement parameter.
If the structure of Fig. 3, the crossed roller bearing axial rigidity mechanism for testing of the utility model are, on the basis of Fig. 2,
The loading module and torgue measurement axis 13 of radially installed are dismantled,
It is mounted by means of screws with bracket sleeve tube 21 in 5 upper surface of pedestal, is led in the axle center hole of top surface on bracket sleeve tube 21
It crosses bolt and is fixedly installed with load sleeve 18, pass through thread bush in 18 inner hole of load sleeve and loading bolt 17 is housed；In 4 axis of turntable
Heart hole upper end is set with connecting platform 22, and loading bolt 17 is disposed with downwards steel ball 1 between connecting platform 22, passes
Sensor connecting shaft 15, force snesor 14；
15 1 semi smooth of sensor connecting shaft is sleeved in 18 inner hole of load sleeve, i.e., load sleeve 18 connects sensor
Axis 15 play the guiding role；Steel ball 1 is placed in the taper hole at 15 upper surface center of sensor connecting shaft；Load sleeve 18, load spiral shell
Bolt 17, sensor connecting shaft 15, connecting platform 22 and turntable 4 axis of rotation on the same line；
Loading module herein be it is axially mounted, displacement sensor 1 and displacement sensor 2 19 intersect rolling for detecting
Axially opposing displacement parameter between sub- 2 Internal and external cycle of bearing；
If the crossed roller bearing radial rigidity mechanism for testing structure of Fig. 4, the utility model are, by Fig. 1 turntable 4,
Crossed roller bearing 2, the top board 1 for clamping bearing are removed with 3 the whole series of lower platen,
Including bearing block 27 and radial jackshaft 26,2 outer ring of crossed roller bearing is supported in the stepped hole of bearing block 27,
Top board 1 on 2 outer ring of crossed roller bearing is fixedly connected with bearing block 27,2 inner ring of crossed roller bearing by lower platen 3 with
Turntable 4 is fixed；Radial jackshaft 26 is set in 4 axle center hole of turntable, radial 26 upper and lower ends of jackshaft pass through briquetting 31 and pacify
In radial support 30；
It further include radial reinforcing pedestal 29, radial reinforce in 29 inner hole of pedestal is provided with loading bolt 17, loading bolt 17
Steel ball 1, sensor connecting shaft 15, radial force sensor 14, radial force sensing are disposed between 27 outer wall of bearing block
Device link block 28, steel ball 2 32, the part are collectively referred to as the loading module of radial force；
Transverse bearing seat 27 is provided with displacement measurement plane, i.e., by the central axes of radial jackshaft 26 and loading bolt 17
Plane composed by central axes has displacement measurement unit in the displacement measurement Plane Installation, and displacement measurement unit includes that displacement passes
Sensor 3 23, displacement sensor 4 24 and displacement sensor 5 25, three displacement sensors are arranged on respective magnetic support,
On the table, displacement sensor 3 23 is located at the upper surface of turntable 4, and displacement sensor 5 25 is located at turntable for three magnetic support absorption
4 lower end surface, displacement sensor 4 24 are located at 27 side of transverse bearing seat, and displacement sensor 4 24 and steel ball 2 32 are diametrically square
To opposite；Displacement sensor 3 23 and displacement sensor 5 25 are used to measure the displacement of 2 inner ring of crossed roller bearing, and displacement passes
Sensor 4 24 is used to measure the displacement of 2 outer ring of crossed roller bearing.
Four kinds of above-mentioned mechanism for testing of the utility model install different add according to test needs using modular construction
Carry module, flexible group is allotted corresponding structure, realize crossed roller bearing temperature rise test, the test of crossed roller bearing angular rigidity,
Axial rigidity test and radial rigidity test.
During following steps, crossed roller bearing 2 is referred to as bearing, 2 outer ring of crossed roller bearing and pedestal 5 use
Small―gap suture cooperation, 2 inner ring of crossed roller bearing and turntable 4 use transition fit.
Using the above-mentioned device of the utility model, bearing temperature rise test, the test of bearing angular rigidity, bearing axial direction are carried out respectively
Rigidity test and the test of bearing radial rigidity, follow the steps below to implement:
1, bearing temperature rise is tested:
1.1) according to Fig. 1 assembling test mechanism, thermocouple 9 is fixed；
1.2) start motor 6, keep tachometer value constant, change the quality size of clump weight 10, run 5 hours, read each
The temperature value of a thermocouple 9, is averaged, the relation curve between bearing temperature rise and revolving speed under the conditions of drafting different loads,
Obtain the temperature rise and rotation speed change rule of bearing.
1.3) 10 mass conservation of clump weight is kept, the revolving speed size of motor 6 is changed, runs 5 hours, reads each thermocouple
9 temperature value, is averaged, and the relation curve between bearing temperature rise and load under the conditions of drafting different rotating speeds obtains bearing
Temperature rise and load change rule.
2, bearing angular rigidity is tested:
According to Fig. 2, loading module is mounted in the flange hole of 5 lower sides of pedestal, twists the adjusting of loading bolt 17 and add
The size of power is carried to change the size of loading moment, records different moment loading bottoms displacement sensor 1 and displacement sensor two
19 reading calculates separately out corresponding torque load size, the deflection angle angle value of bearing, then draws torque and deflection angle
Between relation curve, fitting obtain its functional relation, following bearing angular rigidity value is obtained by derivation.As shown in figure 5,
Bearing angular rigidity value calculation formula is as follows:
Mt=Ft·L (2)
In formula, θ is the deflection angle of bearing, δ1、δ1For two displacement sensor values, D be two displacement sensors it
Between distance, MtIt is tilting moment, FtFor external applied load, L is the torque arm length of moment loading, KtFor bearing angular rigidity.
3, bearing axial rigidity is tested:
3.1) according to Fig. 3, axial loading module is installed, and force snesor 14 is zeroed；
3.2) displacement sensor 1 and displacement sensor 2 19 are separately mounted to displacement sensor bracket 1, displacement
On sensor stand 2 20, adjusting parameter makes it in the measurement range of sensor；
3.3) start to load, by changing the amount of feeding of loading bolt 17, adjust the size of axial force, record axially different
Power acts on the reading of the next displacement sensor 1 and displacement sensor 2 19；Using axial force as ordinate, two displacement sensors
The average value of reading is abscissa, draws change curve, functional relation is obtained by fitting, by asking the functional relation
It leads, obtains bearing axial rigidity, calculation formula is as follows:
In formula, KnFor axial rigidity value, FnFor the axial force of load, XnShift value is measured for sensor, bearing can be found out
Axial rigidity value.
4, bearing radial rigidity is tested:
4.1) according to the loading module of Fig. 4 assembling radial force, and three magnetic stands are adsorbed onto the survey on workbench
Position is measured, displacement sensor 3 23, displacement sensor 4 24 and displacement sensor 5 25 are installed, is allowed to be located in measuring surface,
Set displacement sensor parameter；
4.2) start to load, by changing the amount of feeding of loading bolt 17, change the size of radial force, record different radial directions
The reading of three displacement sensors under power effect, converses the big of bearing radial deformation according to the reading of three displacement sensors
It is small, the relation curve between radial force and radial deformation is drawn, is fitted to functional relation, derivation obtains the radial rigidity of bearing
Value, calculation formula is:
X=| Xr1-Xr2| (5)
In formula, Xr1For the reading average value of displacement sensor three and displacement sensor five, the shift value of bearing inner race is represented；
Xr2For the shift value of bearing outer ring；FrFor radial force, KrFor radial rigidity.
Claims (8)
1. a kind of crossed roller bearing temperature rise mechanism for testing, it is characterised in that: including clump weight (10), the fixed peace of clump weight (10)
Mounted in turntable (4) axle center hole upper end, turntable (4) is supported in the annular groove of pedestal (5) top by crossed roller bearing (2), is intersected
Roller bearing (2) outer ring is fixed on pedestal (5) by top board (1) by a circle bolt, and crossed roller bearing (2) inner ring is under
Pressing plate (3) is fixed on turntable (4) by another circle bolt；Turntable (4) axle center hole lower end is threadably secured with connecting shaft (8)
Connection, connecting shaft (8) pass downwardly through the output axis connection of shaft coupling (7) Yu motor (6), and motor (6) is fixed on pedestal (5) inner cavity
In；
Pedestal (5) upper surface is provided with the installation of TC slot, is symmetrically installed in the installation of TC slot multiple thermocouples (9), each
Thermocouple (9) is contacted with crossed roller bearing (2) outer ring.
2. crossed roller bearing temperature rise mechanism for testing according to claim 1, which is characterized in that the clump weight
(10), the output shaft axis of rotation of turntable (4), crossed roller bearing (2), connecting shaft (8), shaft coupling (7) and motor (6) exists
On same straight line.
3. a kind of crossed roller bearing angular rigidity mechanism for testing, it is characterised in that: in pedestal (5), lower circumference is radially provided with one
Flange hole is equipped with load sleeve (18) in the flange hole, and side is installed by bolt and pedestal (5) outside in load sleeve (18) outer
Wall is fixed, and loading bolt (17) are housed by thread bush in load sleeve (18) inner hole；It is set with downwards in turntable (4) axle center hole
Torgue measurement axis (13), successively apical grafting has steel ball one (16), sensor to connect between loading bolt (17) and torgue measurement axis (13)
Spindle (15) and force snesor (14), and the radial centre lines and power of loading bolt (17), steel ball one (16), force snesor (14)
The axis of rotation of square measurement axis (13) and turntable (4) is in same facade；Load sleeve (18), loading bolt (17), steel ball one
(16), sensor connecting shaft (15), force snesor (14) are collectively referred to as loading module, and loading module herein is radially installed；
Pedestal (5) upper surface is also diametrically symmetrically arranged with displacement sensor bracket one (12) and displacement sensor bracket two
(20), it is provided with displacement sensor one (11) on displacement sensor bracket one (12), is arranged on displacement sensor bracket two (20)
There is displacement sensor two (19).
4. crossed roller bearing angular rigidity mechanism for testing according to claim 3, which is characterized in that the loading bolt
(17), the axis of rotation of steel ball one (16), the radial centre lines of force snesor (14) and torgue measurement axis (13) and turntable (4) exists
In same facade.
5. a kind of crossed roller bearing axial rigidity mechanism for testing, it is characterised in that: fixed in pedestal (5) upper surface by screw
It is equipped with bracket sleeve tube (21), is bolted in the axle center hole of top surface on bracket sleeve tube (21) and load sleeve (18) are installed,
Loading bolt (17) are equipped with by thread bush in load sleeve (18) inner hole；It is flat that connection is set in turntable (4) axle center hole upper end
Platform (22), loading bolt (17) are disposed with downwards steel ball one (16), sensor connecting shaft between connecting platform (22)
(15), force snesor (14).
6. crossed roller bearing axial rigidity mechanism for testing according to claim 5, which is characterized in that the sensor
(15) one semi smooth of connecting shaft is sleeved in load sleeve (18) inner hole, and steel ball one (16) is placed on table on sensor connecting shaft (15)
In the taper hole at face center.
7. a kind of crossed roller bearing radial rigidity mechanism for testing, it is characterised in that: including bearing block (27) and radial jackshaft
(26), crossed roller bearing (2) outer ring is supported in the stepped hole of bearing block (27), upper on crossed roller bearing (2) outer ring
Pressing plate (1) is fixedly connected with bearing block (27), and crossed roller bearing (2) inner ring is fixed by lower platen (3) and turntable (4)；Turn
It is set with radial jackshaft (26) in platform (4) axle center hole, radial jackshaft (26) upper and lower ends pass through briquetting (31) and are mounted on
In radial support (30)；
It further include radial reinforcing pedestal (29), radial reinforce in pedestal (29) inner hole is provided with loading bolt (17), loading bolt
(17) steel ball one (16), sensor connecting shaft (15), radial force sensor are disposed between bearing block (27) outer wall
(14), radial force sensor link block (28), steel ball two (32), the part are collectively referred to as the loading module of radial force；
Transverse bearing seat (27) is provided with displacement measurement plane, i.e., by the central axes of radial jackshaft (26) and loading bolt (17)
Central axes composed by plane, have displacement measurement unit in the displacement measurement Plane Installation.
8. crossed roller bearing radial rigidity mechanism for testing according to claim 7, which is characterized in that the displacement is surveyed
Trying unit includes displacement sensor three (23), displacement sensor four (24) and displacement sensor five (25), three displacement sensings
Device is arranged on respective magnetic support, and on the table, displacement sensor three (23) is located at the upper of turntable (4) for three magnetic support absorption
End face, displacement sensor five (25) are located at the lower end surface of turntable (4), and displacement sensor four (24) is located at transverse bearing seat (27) side
Face, displacement sensor four (24) are diametrically opposed with steel ball two (32).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821008954.7U CN208399143U (en) | 2018-06-28 | 2018-06-28 | A kind of modularization crossed roller bearing temperature rise and Static stiffness test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821008954.7U CN208399143U (en) | 2018-06-28 | 2018-06-28 | A kind of modularization crossed roller bearing temperature rise and Static stiffness test device |
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| CN208399143U true CN208399143U (en) | 2019-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956144A (en) * | 2018-06-28 | 2018-12-07 | 西安理工大学 | A kind of modularization crossed roller bearing temperature rise and Static stiffness test device and method |
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2018
- 2018-06-28 CN CN201821008954.7U patent/CN208399143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956144A (en) * | 2018-06-28 | 2018-12-07 | 西安理工大学 | A kind of modularization crossed roller bearing temperature rise and Static stiffness test device and method |
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